EP 4053511 A4 20231018 - MEASURING DEVICE, MEASURING SYSTEM, MEASURING METHOD AND PROGRAM
Title (en)
MEASURING DEVICE, MEASURING SYSTEM, MEASURING METHOD AND PROGRAM
Title (de)
MESSVORRICHTUNG, MESSSYSTEM, MESSVERFAHREN UND PROGRAMM
Title (fr)
DISPOSITIF DE MESURE, SYSTÈME DE MESURE, PROCÉDÉ DE MESURE ET PROGRAMME
Publication
Application
Priority
- JP 2019198577 A 20191031
- JP 2020040593 W 20201029
Abstract (en)
[origin: EP4053511A1] A measurement device includes a light emitter, a light receiver, an extractor, and a processor. The light emitter illuminates an illumination target having an internal space through which a fluid flows. The light receiver receives coherent light including light scattered by the illumination target and outputs a signal corresponding to intensity of the coherent light. The extractor extracts a direct-current component from the signal output from the light receiver at a temporal change in strength of the signal. The processor calculates a calculation value for a flow state of the fluid by performing a process on the signal output from the light receiver. The process includes correction using a value of signal strength of the direct-current component and calculation of a frequency spectrum for the signal at the temporal change in the signal strength.
IPC 8 full level
G01F 1/66 (2022.01); A61B 5/00 (2006.01); A61B 5/026 (2006.01); A61B 5/0285 (2006.01)
CPC (source: CN EP US)
A61B 5/026 (2013.01 - CN); A61B 5/0261 (2013.01 - CN EP US); A61B 5/0285 (2013.01 - CN US); A61B 5/7257 (2013.01 - EP); G01F 1/66 (2013.01 - CN); G01F 1/661 (2013.01 - EP); G01F 1/663 (2013.01 - EP); G01F 25/10 (2022.01 - EP); A61B 5/0059 (2013.01 - EP); A61B 2560/0228 (2013.01 - EP)
Citation (search report)
- [XI] JP 2008278993 A 20081120 - NIPPON TELEGRAPH & TELEPHONE
- [XI] WO 2019146762 A1 20190801 - KYOCERA CORP [JP] & EP 3745096 A1 20201202 - KYOCERA CORP [JP]
- [XI] WO 2019189630 A1 20191003 - KYOCERA CORP [JP] & EP 3779373 A1 20210217 - KYOCERA CORP [JP]
- [XI] JP 2019105497 A 20190627 - NIPPON TELEGRAPH & TELEPHONE
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 4053511 A1 20220907; EP 4053511 A4 20231018; CN 114585302 A 20220603; JP WO2021085525 A1 20210506; US 2022378304 A1 20221201; WO 2021085525 A1 20210506
DOCDB simple family (application)
EP 20881000 A 20201029; CN 202080073557 A 20201029; JP 2020040593 W 20201029; JP 2021553680 A 20201029; US 202017770823 A 20201029